67results about How to "Increase dissolved oxygen levels" patented technology

A hydroponic plant container with a reservoir of “highly oxygenated” nutrient solution that is the result of continuous direct air injection into the bottom of the reservoir, at a specific range of trajectories, along with continuous Coriolis effect mixing. The highly oxygenated nutrient solution is used to provide a deep water culture for the lower section of the plant roots, to saturate the middle section of the plant roots with fine droplets of the highly oxygenated nutrient solution, and to saturate the growing media and the upper section of the plants roots with a continuous drip of the highly oxygenated nutrient solution.

The invention relates to a subsurface flow constructed wetland device for enhanced nitrogen removal in the technical field of environmental engineering. The device comprises a pretreatment settling tank, a hydraulic drop aeration well and a wetland groove, wherein the wetland groove comprises an aerobic nitrating segment, an inspection well, an anoxic denitrification segment and a water collecting well in the water flow direction; the pretreatment settling tank is used for settling suspended matters to prevent follow-up structures from being blocked; hydraulic drop steps are arranged in the hydraulic drop aeration well to increase the dissolved oxygen concentration; active substrates capable of adsorbing ammonia nitrogen are filled in the aerobic nitrating segment, a perforated aerator pipe is vertically inserted and vascular plants are planted to increase the dissolved oxygen concentration in the packing layer, so that the smooth generation of the nitrification is guaranteed; a secondary water inlet pipe is connected into the inspection well to supplement the carbon source that the denitrification requires; efficient phosphorus removal substrates are filled in the anoxic denitrification segment to generate the denitrification, adsorb and remove phosphorus pollutants; the water collecting well is used for collecting treating water and discharging the water out of the device finally. Compared with the prior art, the device disclosed by the invention has the advantages that nitrogen in sewage is well treated and both the total nitrogen removal rate and the ammonia nitrogen removal rate can be up to more than 80%.

The invention discloses a bacillus subtilis and a Gamma-polyglutamic acid preparation method that uses the bacillus subtilis strain. The strain is bacillus subtilis XN01 and is preserved in China Center for Type Culture Collection (CCTCC) on March 18th, 2008 with CCTCC NO. of M 208044; the Gamma-polyglutamic acid can be prepared with the strain through the steps of strain cultivation and preservation, seed fluid preparation, shaking fluid fermentation and Gamma-polyglutamic acid extraction. The Gamma-polyglutamic acid preparation method can achieve high synthesis efficiency of Gamma-polyglutamic acid in a low-cost fluid culture medium, is simple and has strong operability.

The present invention discloses a hydrolization and acidification - anaerobism and aerobism coupling biochemical degradation system, which belongs to the technical field of environment engineering and industrial waste water disposal. The system is used for disposing organic waste that is difficult to be degraded. The biochemical degradation system consists of two serially connected airlift internally circulating biological fluidized beds. The front airlift internally circulating biological fluidized bed is an anaerobe fluid bed which adopts micro-aeration operation and carries out hydrolization and acidification processing; and the rear airlft internally circulating biological fluidized bed is an anaerobism and aerobism coupling biological fluid bed which is constructed by filling macropore carriers and carries out the complete degradation of organisms. The organic waste water which is difficult to be degraded enters the anaerobic fluid bed first, and enters the anaerobism-aerobism coupled biological fluid bed after the hydrolization and acidification processing so as to be completely degraded. The system achieves high efficiency and quick coupling of the anaerobe degradation and the aerobe, and has the characteristics of high disposing efficiency, short residence time, small floor space, low investment, low running cost and so on. The method can be applied to the sequencing batch type disposal process, and can be applied to the continuous flow type disposal process as well.

The invention provides an efficient culture medium as well as a preparation method and application thereof. The efficient culture medium is prepared mainly by culture medium component optimization and process improvement. The main raw materials of the culture medium mainly comprises the substances of yeast powder, cottonseed protein peptide, soybean cake powder, starch, sodium dihydrogen phosphate, sodium bromide, acetyl coenzyme A, rare earth element and the like, and the efficient culture medium is prepared by fully mixing the substances and making into micro powder. The efficient culture medium contains nutrient substances and microelement required by the growth of thalli, and specific precursors and accelerants, is capable of effectively promoting the production of a target product and inhibiting the generation of a by-product, and is especially suitable for tetracycline fermentation, and the yield and purity of a fermented product are high.

The invention relates to a layered high-density demersal breeding fish pond. The layered high-density demersal breeding fish pond is that at least one inhabiting layer structure is arranged in the center of the bottom surface of the fish pond; the inhabiting layer structures are overlapped, each comprising an inclination support for supporting a horizontal circular porous separating plate; the aperture of the porous separating plate is more than the maximum diameter of particle feed; the porous separating plate is provided with at least one fish passing hole through which fish can cross the upper layer and the lower layer to move; a water feeding pipe is vertically arranged in the center of the fish pond and horizontally communicated with horizontal water distributing pipes; each inhabiting structure is corresponding to at least four water distributing pipes; the bottom structure of the fish pond is high in middle, low in four sides, and about 3 to 5 degrees in gradient; a circle of downwards-concave sewage collecting tanks is formed in the bottom part of the wall of the fish pond; a plurality of sewage draining pipes are arranged below the sewage collecting tanks; a water returning pipe is arranged on the sidewall of the fish pond; a circulating water pump is arranged between the water returning pipe and the water feeding pipe to provide water circulating power. According to the layered high-density demersal breeding fish pond, water is treated by physical filtering, biological filtering, oxygen increase, sterilizing and other purifying links and then is recycled, so that breeding with circulating water can be achieved.

The invention provides a drop-aeration water treatment system which comprises a microorganism filter pool and a drop dam. The microorganism filter pool comprises multiple stages of microorganism filter beds which are connected in series and provided with water inlet pipes at water inlets. The microorganism filter bed at the head end is connected with a water inlet pump. The microorganism filter bed at the tail end is connected with the drop dam. Each microorganism filter bed comprises carrier filler, an upper tempered glass grating plate covering the carrier filler, a floating bed arranged on a water body above the upper tempered glass grating plate, aeration nozzles laid blow the carrier filler, and a lower tempered glass grating plate arranged below the aeration nozzles. The system integrates biological and ecological processing, reoxygenation and the landscape effect, and is good in treatment effect and suitable for river channel water bodies.

A water treatment apparatus includes a first fluid channel that can circulate contaminated water in the water body, a first inlet that draws the contaminated water into the first fluid channel, and an outlet that allows the contaminated water to exit the first fluid channel. A second fluid channel installed with a filter therein can filter contaminated water in the water body to produce a filtered water flow. A fluid transport apparatus can draw the contaminated water through the first fluid channel and the second fluid channel. A flow control system allows water to flow in a predetermined angular range while blocking at least a portion of the remaining angular range in at least one of the first inlet and the outlet to achieve mixing coverage with different aspect ratio. The position of the outlet can be adjusted to optimize the flow rate and pattern.

The invention provides an unmanned aquaculture oxygenation workstation and an oxygenating method. The unmanned aquaculture oxygenation workstation comprises a floating plate, a driving mechanism, an oxygenation mechanism and an oxygen injection mechanism, wherein the driving mechanism is arranged on the upper surface of the floating plate; the oxygen injection mechanism is annularly arranged on the periphery of the floating plate, and comprises a rubber water ring, a floating bucket, a valve, an air guide pipe, an assembly plate, exhaust duckbills and a three-way valve; the rubber water ring is fixedly arranged on the side wall of the floating plate, and the floating bucket is fixedly arranged in the rubber water ring; the oxygen outlet formed in the side wall of the floating bucket is fixedly connected with the oxygen inlet of the assembly plate through the air guide pipe; four exhaust duckbills which are arranged in an annular shape are fixedly arranged at the bottom of the assemblyplate, and each exhaust duckbill is fixedly connected with the oxygen vent formed in the bottom of the assembly plate; and the three-way valve is arranged on the air guide pipe. The unmanned aquaculture oxygenation workstation and oxygenating method have the advantage of increasing the mixing contact area of air and a water body.

The invention provides a specific microorganism activating filler for treating black and odorous water bodies and belongs to the technical field of water treatment. The filler is prepared from the following raw materials in parts by weight: 3-5 parts of a microorganism inducer, 40-80 parts of an attachment carrier, 0-10 parts of an organic macromolecule polymer, 0-4 parts of an inorganic flocculate and 1-30 parts of an oxidization decoloring agent, wherein the microorganism inducer comprises nitrobacteria and/or denitrifying bacteria and a culture medium matter for the growth of the nitrobacteria and/or the denitrifying bacteria. The filler provided by the invention has the advantages that traditional water body purification is broken through; indigenous microorganisms of the water bodies are activated mainly and the water bodies per se serve as cultivating and breeding bases, so that the growth space of the microorganisms is greatly released, the effective biomass and the functionality of the microorganisms are increased, the microbial ecosystem of the water bodies is recombined, improved and optimized and the self-purification capacity of the water bodies is realized eventually.

The invention relates to the technical field of an enzyme preparation, and particularly relates to a trichoderma reesei mutant strain and application thereof. After the mutant strain is subjected to shake-flask fermentation for 5 days, the enzyme activity of the neutral cellulase in fermentation supernatant fluid is 114m/ml, and is improved by 34 percent through being compared with that of an original strain; in the 20L fermentation tank small tests, the enzyme activity of the neutral cellulase in the fermentation supernatant fluid reaches 1335 u/ml; the amplification effect is obvious on theexpression quantity after the comparison with a shake-flask result; and the mutant strain has the advantages of thick and short mycelia, high dissolved oxygen level, low fermentation liquid viscosityand the like in the fermentation process; and the unexpected technical effects are achieved. The trichoderma reesei mutant strain can be widely applied to cellulase production, so that the productioncost of the cellulase can be favorably reduced; and the popularization and the application of the cellulase in relevant fields can be promoted.

A method for increasing the quantity of dissolved oxygen in water includes addition of an oxidant to the water to increase the oxidation-reduction potential (ORP) of the water to between about 400 and 850 mV, followed by electrolysis to generate oxygen gas. The voltage applied to the electrolytic cells during electrolysis is less than 300 mV. The dissolved oxygen content of the water exiting the electrolytic cell is about 90% of saturation to super saturation.

The invention discloses a black odoriferous water treatment method. The black odoriferous water treatment method comprises the following steps that exogenous solid-liquid waste is prevented from entering a polluted black odoriferous water body, and solid waste in the water body is preliminarily removed in a manual or mechanical salvage mode; after the solid waste residual body is removed and the exogenous solid-liquid waste is blocked, an activation composition is put in the black odoriferous water; the activation composition is prepared from silicon dioxide, titanium dioxide, activated carbon and iron powder; then a curing agent is put in the black odoriferous water body. The black odoriferous water treatment method can effectively improve the visual effect of the water body, improves the water transparency while remarkably reducing odoriferous substrates of the water body, improves dissolved oxygen level of the water body and improves the water body and a local micro-environment of surficial sediments. A corresponding product is expected to play a good treatment effect on removal of local phytogenic water body black odoriferous substances of rivers and lakes.

The invention discloses a static water body pollution treatment device which comprises a pipeline aeration component, a water circulating passage component and an ammonia-nitrogen degrading pool component. Two ends of a water body passage are open in a water body or on a band side, a water lifting device delivers water at one end of the passage to the other end of the passage, a pool body of the ammonia-nitrogen degrading pool component is arranged in the water body or, and the inside of the pool body is filled with a filler. A hose aeration system, an aeration hydraulic circulating device and ammonia-nitrogen degrading are adopted comprehensively for aeration and oxygenation, for local circulating, the reoxygenation process of the water body is accelerated, dissolved oxygen level of the water body is increased, activity of aerobic microorganisms in the water body is restored and enhanced, polluting substances in the water body are purified, the static water body pollution treatment device is novel low-energy-consumption water body fluidization technology and has remarkable environment-protection and economic value; the static water body pollution treatment device is quite low in energy consumption, runs by micropower, can realize long-time, automatic, efficient and stable running when being matched with a solar device, and can completely meet requirements on pollution treatment of static water bodies like riverways and ponds.

The invention belongs to the technical field of sewage purification, and particularly discloses an in-situ ecological ditch pollution interception and purification method for a water supplementing system. The method comprises the following steps: (1) salvaging sludge at the bottom of a river channel, screening, separating and culturing indigenous microorganisms, domesticating, and re-feeding the domesticated indigenous microorganisms into the river channel; (2) reconstructing the river channel into an ecological ditch, and successively dividing the ecological ditch into a microorganism restoration area, an aeration area, a denitrification area and a plant absorption area; (3) arranging an aeration filter apparatus in the aeration area, and enabling the aeration filter apparatus to run continuously for 6 to 10 hours; cleaning up impurities isolated in the aeration area every 25 to 40 days; and (4) purifying the water in the ecological ditch by virtue of the microorganism restoration area, the aeration area, the denitrification area and the plant absorption area to finally flow into the secondary rivers and lakes. By using the method of the invention, the sewage is purified in situ in the water supplementing system, so that the water flowing into the secondary rivers and lakes is ensured to be clean, and no secondary pollution is caused.

The invention discloses a straight-through type in-situ remediation rod for river sediment pollution treatment. The invention belongs to the technical field of ecological environmental protection. Anin-situ remediation mode can be adopted. The remediation rod is directly inserted into the river sediment, natural wind is used as source power, and an internal and external isolation magnetic force guiding mode is used to transfer power into the remediation rod. Then, an aeration layer is extruded to release air in the aeration layer. Meanwhile, external air on the water surface is supplemented,the dissolved oxygen level of the river sediment area is continuously increased, therefore, the microbial action in the sediment is obviously improved, and the decomposition treatment on an ammonia nitrogen pollution source is accelerated. Meanwhile, a plurality of micro-nano bubbles can be slowly generated during aeration, the pollution treatment effect of the river sediment is comprehensively promoted by utilizing the enhanced decomposition and biological purification functions of the micro-nano bubbles on organic pollutants, secondary pollution is not easily caused, the treatment cost is relatively low, and the original river ecological environment is hardly influenced.